Condenser.



R. D. TOMLINSON.

CONDENSEP.

APPLICATION FILED APR. s. 1912.

PatentedJa11.2T,l914.

ATTD'ENEV.

PIE- WITNESSES- CIJ UUFED STATES Prihl'll FFQ.

ROYAL D. TOMLNSON, OF MILWAUKEE, WISCONSIN, ASSIGNOR, BY MESNE ASSIGN-MENTS, TO ALLIS-CHALMERS MANUFACTURXNG COMPANY, A CORPORTIGN OFDELAWARE.

CONDENSER.

rosales.

Application filed April 6, 1912. Serial No. GSSf.

Specification of Letters Patent.

Patented Jan. 27, 191 t.

To all '1c/tom it may concern.

13e it known that I, ROYAL D. ToMLiNsoN, a citizen ot' the UnitedStates, residing at Milwaukee, in the county of Milwaukee and StateotlViscousin, lhave invented a certain new and useful Improvement inCondensers, ot' which the following is a specification.

T his invention relates to a condenser for the ste-ain of an engine,especially an engine ot' the turbine class.

'lhe object of the invention is to improve the construction ofcondensers, especially in the feature of forced injection of waterthereto and the elimination of expensive valves in the steam pipe to thecondenser, nud in the separation of the air taken from the condenser,from the water used in its extraction.

Airnother object is to provide a condenser with two distinct waterinjection pipes, one natural and the other forced.

Another object of the invention is to have a single pump to supply thewater used when the condenser is operated by forced injection and alsoto supply that used to eject the air from the condenser.

ln order to better make known this in vcntion, reference is made to theaccompanying drawing showing,r one embodiment ther-coi". in which,

Figure 1 is a diagrammatic showing partly in section, of the condensersystem. Fig. '2- is a similar showing viewed at right angles to theshowing in Fig. 1. Fig. 3 is a longitudinal section through thecondenser. Fig. 4 is a transverse section through the condenser on theline fil/'AFV of Fig. 3. Fig. 5 is a sectional view through the `guardplate applied to the discharge pipe of the air ejector.

tteterrinf to the drawing, especially Figs.

I 1 and 2 thereof, the primary derices of the condenser system are asteam turbine 1 de liver'ing exhaust steam to a condenser 4, from whichthe condense water passes to a centrifugal pump 19, and thence to a hotwell 37. A second centrifugal pump 2O supplies water to the air ejector16 and to the condenser 4. These two pumps 19, Q0, are driven from acommon shaft by a motor 21, which may bc either a steam turbine or anelectric motor.

The piping,r connections will now be explained. The injection pipe 8originates at its lower end in cold well Q4, passes upwardly along theside of the condenser-1, around to the end ot' the condenser si by aU-pipe i and connects to the condenser i at the lower part. ot the lettend thereof as seen in Fig. 2. .fi mein injection valve 7 is located inthe U-pipe G and is operated by hand wheel Q. The exhaust p'ipe 3 fromthe turbine 1 connects to condenser #l at. the neck Q5 tilt the top ofthe condenser. The discharge.- pipe 9 for injection water and condensewater connects to the condenser 4 at the ndck at theibottom of' thecondenser, extends downwardly in a sort ot' S- shape and connects to theinlet ot pump 19, the discharge pipe 18 ot' which extends into the hotwell 3T. The check valve 1l" is located in the discharge pipe 18. An airejection pipe connects to the condenser et at the upper portion of thelett cud thereof as seen in Fig. Q, and extends downwardly to itsconnection with the air ejector 1G dischargingI to well 22. which incommunication with cold well 24 as more clearly disclosed in Fig. Q. Avalve 12 is interposed in the air ejection pipe. The pump 520 has itssuction pipe 223 originating;r in the cold well Q1 and its dischargepipe 14 is divided into two branch pipes 11, 15, the former of whichextends upwardly and connects with the U-pipe 6 between the maininjection valve 7 and thc condenser 4 (or it may con` necty directly tothe condenser 4). and the latter of which extends downwardly andconnects to the air ejector 16. A vnlve 10 is interposed in the branchpipe 11, and a valve 151 in the branch pipe 15. A steam primer 3. 13, isconnected to the discharge pipe 14 of thc pump 20 and preferably discharges into the branch pipe 15.

Referring;r to Figs. 3 and si of the drawing, the condenser structurewill now be dcscribed. The water box 32 is connected to the U-pipe 6supplying the main injection water, and from this water box 3Q extend aseries ot' wedge shaped troughs 28 into the main body ofl the condenser.These troughs Q8 have serrated edges and are supported at their rightends as seen in Fig. 3. by lugs 2) on the end plate Q90 for the rightend of the condenser. These troughs have baille plates 26 supporteddirectly thereover. Underneath the troughs and alternatinglr therewith,are splash plates 33 supported longitudinally from end to end of thecondenser on lugs provided for that purpose. These splash plates havetheir upper surfaces indented. The discharge neck 35 at the lower partof the condenser is extended therein a short distance and has its upperedge 34 serrated. An air pocket 3() is formed above the Water box 32 andconnects to the air ejection pipe 5. A guard plate 27 separates thesteam and air spaces of the upper part of; the condenser. Convenientvhand holes 36 may be provided in the end plate 290.

Referring to Fig. 5, a guard plate or spreader 38 is connected to thedischarge end of the air ejector 16 or the pipe extending therefrom, bymeans of connecting posts 39. The middle portion of the guard plate orspreader 38 is made in the shape of a cone.

The operation of the condenser is as follows-z In order to beginoperations it is necessary to prime the centrifugal pump 20';

" the other pump 19 need not be primed because it receives its supply bygravity. Steam is admitted to the primer 13, which at its right handconnection, as seen in Fig. 2, constitutes an ejector, and at its lefthand merely constitutes a discharge connection for the mixture of steamand the Water ejected to conduct. same to the Well 22 through the airejector 16. In order to have the primer operate it is necessary to shutoff valve 10 in the forced injection pipe 11 and valve 151 in the Waterpipe 14 supplying the air ejector 16. Main valve 7 and air valve 12 areassumed to have been closed. The pump 2O having been thus primed, valve10 is then opened to admit the forced injection Water to the condenser 4through the pipe 11. The main injection valve 7 is then partiallyopened, say one-third, so that the injection Water passes to thecondenser 4 in two Ways; first the forced injection through the pipe.11,and Second, the natural injection by atmospheric pressure through theinjection pipe 8 and U-pipe 6. This natural injection of` Water throughpipe 8 is brought about by the establishment in the condenser 4 of avacuum on account of the admission of the forced injection Water.

Under these conditions the Water and air are removed from the condenserthrough the discharge pipe 9 by the main pump 19 and discharge pipe 18to the hot Well. Valve 151 is now' opened andv valve 10 is closed, thusdiverting the forced injection Water .from the condenser to the airejector 16.

The main injection valve 7 is now opened to the extent required fornormal operation, and' lastly the valve 12 in the air ejection pipe 5 isopened.

Ine case the vacuum should be lost by reason of the loss of the iioWinto the condenser of the main injection Water by atmospheric pressurebecause of low Water in the cold Well 24, the Water in said Well will atthe same time drop below the inlets of the main injection pipe 8 `andthe suction pipe 23 of the pump 20. This Will put the pump 20 out ofcommission so that no Water Will be pumped thereby to the air ejector16. In case the vacuum is lost because the pumps stop by reasonoffailure of the motor which drives them, theny Water Will cease to.'dow

to the air ejector 16 and the vacuum Willbe lost by air entering throughthe airl duced due to overload and consequently the main injection Watersupply level should drop to a point Where the iniiow is almost orentirely cut oifby reason ,of the Water not rising high enough in the.main injection pipe 8 to flow into the condenser, the

valve 12 in the air ejection pipe 5 should be closed and the valve 10 inthe forced injection pipe 11 opened followed quickly by the closing ofthe valve 151 supplying vvater to the ejector 16.- If thesegchanges areaccomplished reasonably quick enough the vacuum may be recovered Withoutbeing entirely lost. It Will be seen that this forced injection Waterpipe 1l provides a means for positively getting water into the condenser4 irrespective of the vacuum pressure. The turbine may be carrying fullload and it is unnecessary to shut oif the steam entering the condenser.1t may be necessary in male.

ing these changes to recover the vacuum that the main injection Valve 7be partially closed to prevent the forced injection Water from passingback into the main injection Water pipe 8 denser 4.

In some cases Where the Water supply is limited it might be advantageousto discharge the Water used for operating the air ejector 16 back intothe cold Well 24 through its communication With Well 22. In order to dothis Without passing the entrained air .baclr to the cold Well 24, adevice is attached to the discharge pipe of the air ejector 16 whichseparates out the air entrained in the Water before or at the time` theWater passes into the well 22. This device is shown in section in F ig.5. j

The device for separating the air from the Water operates by divertingthe Water discharged from the air ejector along the spreader 38m adirection along and substantially at the surface of the Water in theWell 22. The upper surface of the spreader 38 is substantially at theWater level of the Well. Bythis means the entrained air is liberatedfrom the Water and passes to the atmosphere and the Water mingles Withthat in the Well. The saving of Water eifected is instead of passing tothe con-l that all the water used to operate the air ejector 16 ispassed back into the well 24 through its communication with the well 22,

as already stated.

It should be understood that it is not desired to be limited to theexact details of construction shown and described, for obviousmodifications will occur to a person skilled in the art.

It is claimed and desired to secure by Letters Patent,-

l. In combination, a condenser, a wateractuated air ejector connectedthereto, a pipe for supplying actuating water to said ejector, a secondpipe for injection of water to said condenser, and a pump common to saidair ejector and injection pipes.

2. In combination, a condenser, a main Water injection pipe, a mainwater ejection pipe, a pump in said latter pipe, an air ejection pipe, awater-actuated air ejector in said pipe, a secondary injection pipe, anda second pump connected to said secondary pipe and to said ejector.

3. The combination with a condenser, of a Water injection pipe and anair ejection pipe connected thereto, valves in said pipes, an airejector to which said ejection pipe leads, a pump, pipe connections fromsaid pump to said ejector and to said injection pipe on the condenserside of its valve, and valves in said connections.l

4. In combination, a condenser, a wateractuated air ejector connectedthereto,amain pipe for injection of water to said condenser, a secondpipe for injection of water to said condenser, means permittingalternative use of either pipe, and a pump connected to one of saidpipes and to said ejector.

5. In combination, a condenser, hydraulic means for withdrawing'airtherefrom, an air and water discharge pipe for said means, a well forthe discharge from said pipe, said well, being open to` atmosphere, anda spreader for said discharge having its upper surface substantially atthe surface of the water in said well.

6. In combination, a condenser, hydraulic means for withdrawing an'therefrom, a

well, a pipe conveying mixture 0f Water and air from said hydraulicmeans to said well, and a spreader spaced below the end of said pipe andlocated in the path of the water and air from said pipe, the lower endof said pipe being open to atmosphere,

7. In combination, a condenser, hydraulic means for withdrawing airtherefrom, a well, means for conveying a mixturev of water and air tosaid well from said hy:

draulic means, and a spreader having its j,

upper surface substantially .at th@ SUrfaC@ of the water in said wellonto which said mixture is discharged, the lower end of said mixtureconveyingV means being open to atmosphere.

8. In combination, a condenser, hydraulic means for withdrawing airtherefrom, a well, means for conieyng a mixture of water and air to saidwell from said hydraulic means, and means for delivering said mixturealong the surface of water in said well.

9. In combination, a, condenser, a well, a pipe for injecting water fromsaid well to said condenser, an air ejector communicating with saidcondenser and discharging into said well, and a pump taking water fromsaid well and discharging itnto said air ejector,

10. In combination, a condenser, a well, a pipe for injecting water fromsaid well to said condenser, an air ejector communicating with saidcondenser and discharging into said well, a pump taking water from saidwell and discharging it into said air ejector, and a spreads-rin saidwell to receive the discharge from said ail' ejector.

, In testimony whereof, the signature of the inventor is atixed heretoin the presence of two witnesses.

ROYAL D. TUMLINSON.

Witnesses:

G. F. DE WEIN, CnAs. L. BYRON4

